Jul 182007
 

Cluster Configuration Repository (CCR)

  • /etc/cluster/ccr (directory)

Important Files

  • /etc/cluster/ccr/infrastructure

Global Services

  • One node is to specific global services. All other nodes communicate with the global services (devices, filesystems) via the Cluster interconnect.

Global Naming (DID Devices)

  • /dev/did/dsk and /dev/did/rdsk

  • DID used only for naming globally — not access
  • DID device names cannot/are not used in VxVM
  • DID device names are used in Sun/Solaris Volume Manager

Global Devices

  • provide global access to devices irrespective of there physical location.
  • Most commonly SDS/SVM/VxVM devices are used as global devices. LVM software is unaware of the implementation of global nature on these devices.

/global/.devices/node@nodeID

  • nodeID is an integer representing the node in the cluster

Global Filesystems

  • # mount -o global, logging /dev/vx/dsk/nfsdg/vol01 /global/nfs

    or edit the /etc/vfstab file to contain the following:

            /dev/vx/dsk/nfsdg/vol01    /dev/vx/rdsk/nfsdg/vol01    /global/nfs    ufs    2    yes    global,logging<br /><span class="anchor" id="line-43"></span>    

Global Filesystem is also known as (aka) Cluster Filesystem (CFS) or PxFS (Proxy File system)

NOTE: Local failover filesystems (ie. directly attached to a storage device) cannot be used for scalable services — one would have to use global filesystems for it.

Console Software

  • SUNWccon There are three wariants of the cluster console software:
    • cconsole ( access the node consoles through the TC or other remote console access method )
    • crlogin (uses rlogin as underlying transport)
    • ctelnet (uses telnet as underlying transport)

      /opt/SUNWcluster/bin/ &

Cluster Control Panel

/opt/SUNWcluster/bin/ccp [ clustername ] &

All necessary info for cluster admin is stored in the following two files:

  • –> /etc/clusters Eg: sc-cluster sc-node1 sc-node2

    –> /etc/serialports

<span class="anchor" id="line-75"></span>        sc-node1 sc-tc 5002             # Connect via TCP port on TC<br /><span class="anchor" id="line-76"></span>        sc-node2 sc-tc 5003<br /><span class="anchor" id="line-77"></span>        sc-10knode1 sc10k-ssp 23        # connect via E10K SSP<br /><span class="anchor" id="line-78"></span>        sc-10knode2 sc10k-ssp 23<br /><span class="anchor" id="line-79"></span>        sc-15knode1 sf15k-mainsc 23     # Connect via 15K Main SC<br /><span class="anchor" id="line-80"></span>        e250node1 RSCIPnode1 23         # Connect via LAN RSC on a E250<br /><span class="anchor" id="line-81"></span>        node1 sc-tp-ws 23               # Connect via a tip launchpad<br /><span class="anchor" id="line-82"></span>        sf1_node1 sf1_mainsc 5001       # Connect via passthru on midframe<br />

 Posted by at 8:13 pm

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